Improve regex for geo auth keys checker

What does this MR do?

• The gitlab:geo:check rake task produced misleading results if the AuthorizedKeysCommand* directives had leading whitespace. Altered the regular expressions to allow for zero-to-many occurrences of whitespace before the directives.

Related gitlab-orchestrator#30 (closed)

Closes #219572 (closed)

Signed-off-by: Robert Marshall rmarshall@gitlab.com

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Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Code review guidelines
• Merge request performance guidelines
• Style guides
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• Separation of EE specific content

Availability and Testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.

Closes #30 (closed)